Antivirus composite resin composition with excellent virus inactivation function and composite-resin-coated steel sheet using same

Abstract

The present invention relates to an antivirus composite resin composition comprising: 30-60 weight % of a urethane-modified polyester binder resin; 3-15 weight % of a hardener; 0.1-10 weight % of a pigment; 0.1-10 weight % of an antivirus compound; and the remainder of a solvent, wherein the antivirus component comprises one or more selected from the group consisting of (A) metal hydroxide ([M1OH2]), (B) hydroxyapatite ([Ca10(PO4)6(OH)2)), and (C) metal-doped thermosensitive titanium dioxide photocatalyst ([M2—TiO2]), wherein M1 is Ca or Mg, and M2 is Pt, Cr, V, Mn, Fe, Zn, Cu, Ni, Zr, Mo, Ag, W, or Au.

1 . An antiviral composite resin composition comprising:
 30 to 60 wt % of a urethane-modified polyester binder resin;   3 to 15 wt % of a curing agent;   0.1 to 10 wt % of a pigment;   0.1 to 10 wt % of an antiviral compound; and   a remainder of a solvent,   wherein the antiviral component comprises one or more selected from the group consisting of   (A) metal hydroxide ([M 1 OH 2 ]),   (B) hydroxyapatite ([Ca 10 (PO 4 ) 6 (OH) 2 )), and   (C) metal-doped thermosensitive titanium dioxide photocatalyst ([M 2 —TiO 2 ]),   wherein M 1  is Ca or Mg, and   M 2  is Pt, Cr, V, Mn, Fe, Zn, Cu, Ni, Zr, Mo, Ag, W, or Au.   
     
     
         2 . The antiviral composite resin composition of  claim 1 , wherein the urethane-modified polyester binder resin has a weight average molecular weight (MW) of 2000 to 30000. 
     
     
         3 . The antiviral composite resin composition of  claim 1 , wherein the urethane-modified polyester binder resin has a hydroxy value of 10 to 300. 
     
     
         4 . The antiviral composite resin composition of  claim 1 , wherein the urethane-modified polyester binder resin has an acid value of 5 to 30 mgKOH/g. 
     
     
         5 . The antiviral composite resin composition of  claim 1 , wherein the curing agent is at least one selected from the group consisting of an aziridine curing agent, a melamine curing agent, and an isocyanate curing agent. 
     
     
         6 . The antiviral composite resin composition of  claim 5 , wherein the isocyanate curing agent is at least one selected from the group consisting of compounds represented by the following structural formula (d) and the following structural formula (e), 
       
         
           
           
               
               
           
         
         in the structural formula (d), R is a methyl group, an ethyl group, a propyl group, a phenyl group, a 2-isopropylphenyl group, or a cyclohexyl group, 
       
       
         
           
           
               
               
           
         
         in the structural formula (e), R′ is 1,3-phenylene, 1,4-phenylene, tolylene-2,4, tolylene-2,6, m-xylylene, dicyclohexylmethane 4,4′, methylenediphenyl 4,4′, or hexamethylene. 
       
     
     
         7 . The antiviral composite resin composition of  claim 1 , wherein the pigment comprises at least one selected from the group consisting of iron oxide (Fe 2 O 3 ), titanium dioxide (TiO 2 ), carbon black, carbon nanotubes, graphite and graphene. 
     
     
         8 . The antiviral composite resin composition of  claim 1 , wherein the pigment has an average particle size of 5 to 30 μm. 
     
     
         9 . The antiviral composite resin composition of  claim 1 , further comprising:
 at least one rust-preventive pigment selected from the group consisting of colloidal silica, silica sol and alkali metal silicate.   
     
     
         10 . The antiviral composite resin composition of  claim 1 , wherein the antiviral compound is a combination of one of the (A) metal hydroxide and (B) hydroxyapatite and (C) the metal-doped thermosensitive titanium dioxide photocatalyst. 
     
     
         11 . The antiviral composite resin composition of  claim 10 , wherein the antiviral compound has a weight ratio of one of the (A) metal hydroxide and (B) hydroxyapatite and (C) the metal-doped thermosensitive titanium dioxide photocatalyst of 3:1 to 1:3. 
     
     
         12 . The antiviral composite resin composition of  claim 1 , wherein the antiviral compound comprises all of the (A) metal hydroxide, (B) hydroxyapatite, and (C) metal-doped thermosensitive titanium dioxide photocatalyst. 
     
     
         13 . The antiviral composite resin composition of  claim 12 , wherein the (A) metal hydroxide, (B) hydroxyapatite, and (C) metal-doped thermosensitive titanium dioxide photocatalyst have a weight ratio of 1:1:1. 
     
     
         14 . The antiviral composite resin composition of  claim 1 , wherein the remainder of the solvent is at least one selected from the group consisting of toluene, xylene, isopropanol, solvent naphtha, cellosolve, cellosolve acetate and butyl cellosolve. 
     
     
         15 . An antiviral composite resin coated steel sheet, comprising:
 a base steel sheet; and   an antiviral composite resin coating comprising the antiviral composite resin composition according to  claim 1  on at least one surface of the base steel sheet.   
     
     
         16 . The antiviral composite resin coated steel sheet of  claim 15 , wherein the base steel sheet is a hot-dip galvanized steel sheet (GI), a hot-dip galvannealed steel sheet (GA), an electrogalvanized steel sheet (EG), an aluminum-plated steel sheet, or a zinc-aluminum-magnesium ternary alloy-plated steel sheet. 
     
     
         17 . The antiviral composition resin coated steel sheet of  claim 15 , wherein the antiviral composite resin coating has a dry coating thickness of 3 to 40 μm. 
     
     
         18 . The antiviral composition resin coated steel sheet of  claim 15 , further comprising:
 a primer coating between the base steel sheet and the antiviral composite resin coating,   wherein the primer coating is prepared using a composition including 40 to 60 wt % of a polyethylene polymer resin, 5 to 15 wt % of a melamine curing agent, 1 to 8 wt % of colloidal silica, 1 to 8 wt % of a pigment, and a remainder of a solvent.   
     
     
         19 . The antivirus composition resin coated steel sheet of  claim 18 , wherein the primer coating has a dry coating thickness of 2 to 7 μm.